protected override async Task ClientSendQueryAsync(Expression expression, object argument)
{
if (argument != null)
{
await SendMessageAsync(QbservableProtocolMessageKind.Argument, argument).ConfigureAwait(false);
}
var converter = new SerializableExpressionConverter();
await SendMessageAsync(QbservableProtocolMessageKind.Subscribe, converter.Convert(expression)).ConfigureAwait(false);
}
/// <summary>
/// Deserializes the specified xml to an <see cref="Expression"/>.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="xml"></param>
/// <returns></returns>
public static Expression <T> DeserializeExpression <T>(string xml)
{
if (string.IsNullOrEmpty(xml))
{
throw new ArgumentNullException("xml");
}
SerializableExpression expression = Deserialize <SerializableExpression>(xml);
SerializableExpressionConverter converter = new SerializableExpressionConverter(expression, new DummyQueryHandler());
return(converter.Visit(expression) as Expression <T>);
}
protected override Expression GetExpressionFromMessage(StreamMessage message) => SerializableExpressionConverter.TryConvert(Deserialize <SerializableExpression>(message));
